US2618807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for cooling of porous fiber boards
Assignee: Svenska Flaktfabriken AB
•
Filing: 1949-03-29
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Granted: 1952-11-25
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Expires: 1969-03-29
Abstract
No abstract record available.
Inventors
- 👤 Ingve Bror Gunnar Vilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:00
CPC Classifications
F; F26; F26B; F26B15/00; F26B15/10; F26B15/12; F26B15/18; D; D21; D21J; D21J1/00; F26B13/00; F26B13/24; F26B13/30; F26B2210/00; F26B2210/14; F26B2210/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2084980A
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US2043415A
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US2111835A
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US2207452A
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US2276471A
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US2366484A
Cited
US2418386A
Cited
US2480727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |